lkml.org 
[lkml]   [2011]   [Dec]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH 3/3] HID: usbhid: defer LED setting to a workqueue
Date
Am Mittwoch, 14. Dezember 2011, 11:33:03 schrieb Daniel Kurtz:
> On Wed, Dec 14, 2011 at 4:01 PM, Oliver Neukum <oneukum@suse.de> wrote:
> > Am Donnerstag, 17. November 2011, 12:23:50 schrieb Daniel Kurtz:
> >> Defer LED setting action to a workqueue.
> >> This is more likely to send all LED change events in a single URB.
> >
> > Hi,
> >
> > I hope I am looking at the correct version of this patch.
> > But as far as I can see the work for handling LEDs is not delayed
> > while a reset is going on. That is wrong.
>
> Actually, I'm not sure why this is wrong. I find the reset handling
> quite confusing in this driver.
> Can you point out what will fail, and recommend how to fix it?

That is part of the workings of a USB driver. After you return from
pre_reset() you don't do IO to the device. After post_reset() the
device should be in its default state whose LED states won't match
what they ought to be.

Regards
Oliver


\
 
 \ /
  Last update: 2011-12-14 12:23    [W:0.060 / U:0.404 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site